Haaniella scabra

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Haaniella scabra
Haaniella scabra - pair.JPG
Haaniella scabra, left male, right female
Scientific classification Red Pencil Icon.png
Kingdom: Animalia
Phylum: Arthropoda
Class: Insecta
Order: Phasmatodea
Family: Heteropterygidae
Subfamily: Heteropteryginae
Tribe: Heteropterygini
Genus: Haaniella
Species:
H. scabra
Binomial name
Haaniella scabra
(Redtenbacher, 1906)
Synonyms [1]
  • Heteropteryx scabraRedtenbacher, 1906
  • Haaniella grayi scabra(Redtenbacher, 1906)
  • Haaniella echinata scabra(Redtenbacher, 1906)

Haaniella scabra is a species of stick insect native to Borneo and a typical representative of the subfamily Heteropteryginae. The occasionally used common name Small Haaniella refers to the size of this. [1]

Contents

Description

Haaniella scabra primarily differs from most of the other representatives of the genus by its much smaller size. Many sharp spines can also be found in this species on the head, body and legs of both sexes. The formation of the wings also corresponds to that of the other Haaniella species. Both pairs of wings are shortened, with the forewings, which are designed as tegmina, completely covering the hindwings, which have been transformed into stridulation organs.

The males are only 50 to 57 millimetres (2.0 to 2.2 in) long. The abdomen and legs are usually dark brown in color. The head and thorax are drawn somewhat livelier due to lighter parts. The spines in particular are usually very light or almost white. The forewings at rest reveal an equally bright "V"-shaped pattern. The remaining wing areas are brown with black veining. The long, also light-colored spines on the underside of the abdomen are also striking. The underside of the sterna of the thorax is fawn brown and thus forms a clear contrast to the black colored membranes between the segments and joints.

The females are significantly larger than the males with a body length of 70 to 76 millimetres (2.8 to 3.0 in). Their abdomen ends with the spine-like ovipositor typical of the subfamily Heteropteryginae. The ventral subgenital plate of this laying apparatus, which is also known as the operculum, is significantly longer than the dorsal part, which is called the supraanal plate or epiproct. In Haaniella scabra, the end of the supraanal plate is characterized by the presence of two to eight fine teeth. The abdomen swells in adult females during the oviposition phase, as in other species of the genus. The coloring is dominated by a rather simple light brown tone. A slight pattern is usually only visible on the head. Small, dark eyespots may be present on the upper side of the abdomen at about the level of the eighth abdominal segment. Some females also have very lightly colored areas on the abdomen, mostly around the sixth abdominal segment. This drawing is then already present in the nymphs. Both adult females and older nymphs have the typical blue-black synovial and intersegmental membranes, complemented by orange-red areas on the sternum, hind coxae, and undersides of hind femurs. In addition, a black spot can almost always be found on the middle of the outer edges of the forewings. [2] [3]

Distribution and way of life

The distribution area of Haaniella scabra is limited to the high mountain regions around Mount Kinabalu in the center of the Malaysian state of Sabah, in the northern part of Borneo. There the animals can be found at altitudes between 1,000 to 1,800 metres (3,300 to 5,900 ft).

In its behavior, this nocturnal species resembles the other representatives of the genus from Borneo. It shows the same defensive behavior, consisting of spreading the held up spiked hind legs and closing them when touched by an attacker. The females also lay their eggs in the ground at night using the ovipositor. Although the hairy eggs are smaller than those of the other species, measuring 6 to 7 millimetres (0.24 to 0.28 in) in length and 4.5 to 5 millimetres (0.18 to 0.20 in) in width, they are still quite large for the size of the animals. They also show a diagonally cross-shaped micropylar plate in the lower angle of which the micropyle is located. After 8 to 18 months, the 24 millimetres (0.94 in) long nymphs hatch, and they need another 18 months to become adults. Older nymphs also have the high-contrast colored underside of the imagines' bodies. The average life expectancy of this species, which comes from the cool high mountains, is significantly higher than that of the other species. For example, a wild-caught female cared for by Oskar V. Conle reached an age of more than five years. [2] [3] [4] [5]

Taxonomy

In 1906, Josef Redtenbacher initially described the species as Heteropteryx scabra, [6] thus ignoring the description of the genus Haaniella published by William Forsell Kirby in 1904. The species name "scabra" was chosen in allusion to the rough surface of the body caused by the spines (Latin scabrum = rough). Klaus Günther placed the species in 1932 as a subspecies of Haaniella grayii , but changed this assignment in 1944 and assigned it again as a subspecies to Haaniella echinata . As early as 1938, it was designated by John William Holman Rehn as a separate species and addressed as Haaniella scabra. Only when the first specimens were imported to Europe by Cocking in 1984 were the animals examined again. Since a 1985 publication, also by Cocking, Haaniella scabra has again been considered a valid species. A total of four syntypes are deposited at museums in Vienna, Saint Petersburg and Paris. The male specimen of the two syntypes located in Vienna has been determined as the lectotype. [1] [2] [3]

In terraristics

After Cocking introduced animals for terraristics for the first time in 1984, further animals were not imported again until 1996. The species is listed under PSG number 70 by the Phasmid Study Group.

Although small to medium-sized terrariums are sufficient for keeping Haaniella scabra, the species is considered very delicate. Mortality is often very high, especially in the first few weeks after hatching. The terrarium should be provided with suitable hiding places and a substrate that is suitable for laying eggs and is always slightly moist. In addition to high humidity, temperatures of an average to a maximum of 20 °C (68 °F) are necessary for successful keeping. Diet is not a problem, because in addition to leaves from Rosaceae such as bramble, Crataegus and firethorn, oak, ivy and other plants are also eaten. [2] [4] [7]

Related Research Articles

<i>Heteropteryx</i> Species of stick insect

Heteropteryx is a monotypic genus of stick insects containing Heteropteryx dilatata as the only described species. and gives its name to the family of the Heteropterygidae. Their only species may be known as jungle nymph, Malaysian stick insect, Malaysian wood nymph, Malayan jungle nymph, or Malayan wood nymph and because of their size it is commonly kept in zoological institutions and private terrariums of insect lovers. It originates in Malay Archipelago, more precisely on the Malay Peninsula and Borneo and is nocturnal.

<span class="mw-page-title-main">Heteropterygidae</span> Family of stick insects

The Heteropterygidae is a family of stick insects belonging to the suborder Euphasmatodea. Species can be found in Australasia, East and Southeast Asia. More than 130 valid species are descriebed.

<span class="mw-page-title-main">Heteropterygini</span> Tribe of stick insects

Heteropterygini is the only tribe within the subfamily of the Heteropteryginae. With 19 representatives described, this subfamily includes the fewest species of the three subfamilies, but includes the largest and most striking species of the family.

<i>Epidares</i> Species of stick insect

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<i>Hoploclonia</i> Tribe of stick insects

Hoploclonia is the only genus of the tribe Hoplocloniini and brings together relatively small and darkly colored Phasmatodea species.

<i>Haaniella</i> Genus of stick insects

Haaniella is a genus of the Phasmatodea family Heteropterygidae from Southeast Asia.

<i>Mearnsiana</i> Genus of stick insects

Mearnsiana is a monotypic genus of stick insects, containing Mearnsiana bullosa as the so far only described representative.

<i>Tisamenus</i> (insect) Genus of stick insects

The genus Tisamenus native to the Philippines combines small to medium-sized species of stick insects.

<i>Brasidas</i> (insect) Genus of stick insects

Brasidas is a genus that is native to the Philippines and is named after the Spartan general Brasidas

<i>Theramenes</i> (insect)

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<i>Aretaon asperrimus</i> Species of stick insect

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<i>Dares philippinensis</i> Species of stick insect

Dares philippinensis is a species of stick insects. This species is not native to Borneo like most other members of the genus Dares, but to the Philippine island Palawan.

<i>Dares verrucosus</i> Species of stick insect

Dares verrucosus is a species of stick insects. Like most other members of the genus Dares, the species is native to Borneo, more precisely in the north of the island.

<i>Dares validispinus</i> Species of stick insect

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<i>Dares ulula</i> Species of stick insect

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<i>Aretaon muscosus</i> Species of stick insect

Aretaon muscosus is a stick insect species from the family Heteropterygidae, which is native to Borneo.

<i>Hoploclonia cuspidata</i> Species of stick insect

Hoploclonia cuspidata is a stick insect species native to the north of Borneo and is also called Brunei Hoploclonia stick insect.

<i>Haaniella erringtoniae</i> Species of stick insect

Haaniella erringtoniae is a stick insect species. It is a typical representative of the subfamily Heteropteryginae. The occasionally used common name Errington's Haaniella refers to the species name.

<i>Haaniella dehaanii</i> Species of stick insect

Haaniella dehaanii is a stick insect species. It is a typical representative of the subfamily Heteropteryginae. The occasionally used common name De Haan's haaniella refers to the species name.

<i>Haaniella gorochovi</i> Species of stick insect

Haaniella gorochovi is a stick insect species from Vietnam. It is a typical representative of the subfamily Heteropteryginae. The occasionally used common name Gorochov’s Haaniella refers to the species name.

References

  1. 1 2 3 Brock, P. D.; Büscher, T. H. & Baker, E. W. Phasmida Species File Online . Version 5.0. (accessdate 04 October 2022)
  2. 1 2 3 4 Bragg, P. E. (2001). Phasmids of Borneo, Natural History Publikations (Borneo) Sdn. Bhd., Kota Kinabalu, Sabah, Malaysia, 2001, p. 93–97, ISBN 983-812-027-8
  3. 1 2 3 Edward Baker (2011). Haaniella scabra (Redtenbacher, 1906) Bemerkungen zur Zucht, ZAG Phoenix, Nr. 3 Juni 2011 Jahrgang 2(1), p. 46–49, ISSN   2190-3476
  4. 1 2 Bruins, E. (2006). Illustrierte Terrarien Enzyklopädie - Dörfler Verlag, Eggolsheim 2006, p. 77, ISBN 978-3-89555-423-0
  5. ↑ Haaniella scabra under The Longest Lived on phasmatodea.com by Hennemann, F. H.; Conle, O. V.; Kneubühler, B. & Valero, P.
  6. ↑ Josef Redtenbacher (1906). Die Insektenfamilie der Phasmiden. Vol. 1. Phasmidae Areolatae . Verlag Wilhelm Engelmann, Leipzig, pp. 169–171
  7. ↑ Phasmid Study Group Culture List
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